Introduction Central nervous system (CNS) tumors account for around 1 to 2% of all neoplasms, commonest of them being gliomas. Gliomas constitute a large, heterogenous group of tumors known for a wide variation in clinical presentation, gross and microscopic features, and biologic behavior. Squash cytology can be a great asset in the intraoperative diagnosis of CNS pathology. In this article, we correlate it with the histopathology of gliomas. Method A prospective analytical study was conducted at the Department of Neuropathology, Super-Speciality Hospital, NSCB Medical College, Jabalpur, India. A total of 75 samples were collected for intraoperative squash cytology. The biopsy samples were collected subsequently after surgery for histopathological correlation. Statistical analysis was done using SPSS software to calculate the sensitivity, specificity, and diagnostic accuracy of squash cytology. Results Of the total 75 patients clinically and radiologically suspected of having gliomas, 43 (57.33%) were males to give a male-to-female ratio of 1.34:1. The mean age at presentation was 36.50 ± 16.87 years. Right-sided tumors were more common. The most common location was the frontal lobe (46.66%). Concordance with squash cytology was found in 81.33% of cases. Sensitivity, specificity, and diagnostic accuracy of squash cytology in the diagnosis of gliomas were found to be 98.61, 66.66, and 97.33%, respectively. Conclusion Squash cytology is a rapid, inexpensive, and accurate diagnostic method for intraoperative diagnosis of gliomas that can guide the surgeon on the extent of tumor resection.
Summary:We conducted electrophysiologic (EP) studies and cstirnated the sinus nodc function and atrioventricular ( A V ) conduction in 10 patients with suspected coronary arterial disease (age range 35-55 years) before and during diltiazem therapy (60 mg thrice daily for 5-7 days). The effect of beta blockade (0.1 mg/kg of intravenous propranolol) was evaluated in both EP studies. The mean spontaneous sinus cycle length (SCL) and the AV nodal Wenckebach cycle lengths (AVWB) were significantly higher (p < 0.05) after propranolol alone (9 I3 f 13 1 and 504 197 ms, respectively) compared with baseline values (SCL: 827f 149 ms, AVWB: 439f 173 ms). Diltiazem alone failed to influence the SCL and AVWB significantly. Nonc of the other parameters (sinoatrial conduction time, corrected sinus node recovery time, AH and HV intervals, AV nodal and atrial effective refractory periods) were significantly influenced by propranolol, diltiazem, or the combination. No patient developed AV block, sinus arrest/sinoatrial exit block, or symptomatic sinus brddycardia following beta blockade after diltiazem administration. Oral diltiiizeni therapy alone and after beta blockade does not appear to adversely influence the sinus node function and AV conduction in patients below the age of 55 years. The combination of diltiazem and beta blocker thus appears safe in selected patients with coronary arterial disease.
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